[PATCH 07/15] parisc: use generic sys_fanotify_mark implementation

[John David Anglin]

On 2024-06-21 4:54 a.m., John Paul Adrian Glaubitz wrote:
> Hi,
>
> On Fri, 2024-06-21 at 08:28 +0200, Arnd Bergmann wrote:
>> It's more likely to be related to the upward growing stack.
>> I checked the gcc sources and found that out of the 50 supported
>> architectures, ARGS_GROW_DOWNWARD is set on everything except
>> for gcn, stormy16 and  32-bit parisc. The other two are
>> little-endian though. STACK_GROWS_DOWNWARD in turn is set on
>> everything other than parisc (both 32-bit and 64-bit).
> Wait a second! Does that mean that on 64-bit PA-RISC, the stack is
> actually growing downwards? If yes, that would be a strong argument
> for creating a 64-bit PA-RISC port in Debian and replacing the 32-bit
> port.
No, the stack grows upward on both 32 and 64-bit parisc.  But stack arguments
grow upwards on 64-bit parisc.  The argument pointer is needed to access these
arguments.  In 32-bit parisc, the argument pointer is at a fixed offset relative to the
stack pointer and it can be eliminated.

Dave

-- 
John David Anglin  dave.anglin at bell.net